如何从SwiftUI视图导航回UIViewController？

@State private var isShowingDetail = false

var body: some View {
    NavigationView {
        VStack {
            Text("SwiftUI View")
                .font(.largeTitle)
            
            NavigationLink(destination: MyViewController(), isActive: $isShowingDetail) {
                Text("Navigate to UIViewController")
                    .font(.headline)
            }
        }
    }
}

struct MyViewController: UIViewControllerRepresentable {
    func makeUIViewController(context: Context) -> UIViewController {
        // 创建并返回你的UIViewController实例
        return MyCustomViewController()
    }
    
    func updateUIViewController(_ uiViewController: UIViewController, context: Context) {
        // 更新UIViewController的内容
    }
}

class MyCustomViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let backButton = UIBarButtonItem(title: "Back", style: .plain, target: self, action: #selector(dismissViewController))
        navigationItem.leftBarButtonItem = backButton
    }
    
    @objc func dismissViewController() {
        dismiss(animated: true, completion: nil)
    }
}